[U-Boot] [PATCH v2 10/14] cmd: bootefi: carve out fdt parameter handling

AKASHI Takahiro
2018-11-05T09:06:49Z

The current way how command parameters, particularly "fdt addr," are
handled makes it a bit complicated to add a subcommand-specific parameter.
So just refactor the code and extract efi_handle_fdt().

This commit is a preparatory change for enhancing bootmgr sub-command.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
cmd/bootefi.c | 51 +++++++++++++++++++++++++++++++++-----------------
cmd/efishell.h | 1 +
2 files changed, 35 insertions(+), 17 deletions(-)

diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index 5d61819f1f5c..3aedf5a09f93 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -356,6 +356,31 @@ static efi_status_t efi_install_fdt(ulong fdt_addr)
return ret;
}

+int efi_handle_fdt(char *fdt_opt)
+{
+ unsigned long fdt_addr;
+ efi_status_t r;
+
+ if (fdt_opt) {
+ fdt_addr = simple_strtoul(fdt_opt, NULL, 16);
+ if (!fdt_addr && *fdt_opt != '0')
+ return CMD_RET_USAGE;
+
+ /* Install device tree */
+ r = efi_install_fdt(fdt_addr);
+ if (r != EFI_SUCCESS) {
+ printf("ERROR: failed to install device tree\n");
+ return CMD_RET_FAILURE;
+ }
+ } else {
+ /* Remove device tree. EFI_NOT_FOUND can be ignored here */
+ efi_install_configuration_table(&efi_guid_fdt, NULL);
+ printf("WARNING: booting without device tree\n");
+ }
+
+ return CMD_RET_SUCCESS;
+}
+
/**
* do_bootefi_exec() - execute EFI binary
*
@@ -511,7 +536,6 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
unsigned long addr;
char *saddr;
efi_status_t r;
- unsigned long fdt_addr;

/* Allow unaligned memory access */
allow_unaligned();
@@ -527,21 +551,6 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
if (argc < 2)
return CMD_RET_USAGE;

- if (argc > 2) {
- fdt_addr = simple_strtoul(argv[2], NULL, 16);
- if (!fdt_addr && *argv[2] != '0')
- return CMD_RET_USAGE;
- /* Install device tree */
- r = efi_install_fdt(fdt_addr);
- if (r != EFI_SUCCESS) {
- printf("ERROR: failed to install device tree\n");
- return CMD_RET_FAILURE;
- }
- } else {
- /* Remove device tree. EFI_NOT_FOUND can be ignored here */
- efi_install_configuration_table(&efi_guid_fdt, NULL);
- printf("WARNING: booting without device tree\n");
- }
#ifdef CONFIG_CMD_BOOTEFI_HELLO
if (!strcmp(argv[1], "hello")) {
ulong size = __efi_helloworld_end - __efi_helloworld_begin;
@@ -559,6 +568,9 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
struct efi_loaded_image_obj *image_obj;
struct efi_loaded_image *loaded_image_info;

+ if (efi_handle_fdt(argc > 2 ? argv[2] : NULL))
+ return CMD_RET_FAILURE;
+
/* Construct a dummy device path. */
bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
(uintptr_t)&efi_selftest,
@@ -583,7 +595,10 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
} else
#endif
if (!strcmp(argv[1], "bootmgr")) {
- return do_bootefi_bootmgr_exec();
+ if (efi_handle_fdt(argc > 2 ? argv[2] : NULL))
+ return CMD_RET_FAILURE;
+
+ return do_bootefi_bootmgr_exec(boot_id);
} else {
saddr = argv[1];

@@ -592,6 +607,8 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
if (!addr && *saddr != '0')
return CMD_RET_USAGE;

+ if (efi_handle_fdt(argc > 2 ? argv[2] : NULL))
+ return CMD_RET_FAILURE;
}

printf("## Starting EFI application at %08lx ...\n", addr);
diff --git a/cmd/efishell.h b/cmd/efishell.h
index 6f70b402b26b..1e5764a8a38d 100644
--- a/cmd/efishell.h
+++ b/cmd/efishell.h
@@ -3,3 +3,4 @@
#include <efi.h>

efi_status_t efi_init_obj_list(void);
+int efi_handle_fdt(char *fdt_opt);
--
2.19.0